Otto also played minor roles of epic Nazi films such as the 1993 Steven Spielberg film Schindler's List as an SS guard. He later played the role of SS-Sturmbannführer Otto Günsche in the critically acclaimed 2004 film Downfall. In 2006, he appeared in the UK film Alien Autopsy. His portrayal of Billy the Kid in Bremen in 2011 fulfilled a long-standing Desire to act in the Western genre.
He has turned his hand to being an occasional race car driver. In 2007, he raced in the German Mini Challenge VIP car at Oschersleben, but, after a strong performance in the first race, he rolled the car on the second turn of race two. He was given another opportunity in the Mini Challenge VIP Car as part of the 2008 German Grand Prix weekend at Hockenheim.
In 2012 he starred in the film Iron Sky as the movie's primary antagonist – Moon Nazi officer Adler, who infiltrates the USA and plots to become Führer of the Moon Nazi colony.
